/// <summary>
/// 4.4.13. Number-rest state
/// </summary>
CssToken NumberRest()
{
var current = Next;
while (true)
{
if (current.IsDigit())
{
_stringBuffer.Append(current);
}
else if (current.IsNameStart())
{
var number = FlushBuffer();
_stringBuffer.Append(current);
return(Dimension(number));
}
else if (IsValidEscape(current))
{
current = Next;
var number = FlushBuffer();
_stringBuffer.Append(ConsumeEscape(current));
return(Dimension(number));
}
else
{
break;
}
current = Next;
}
switch (current)
{
case Specification.Dot:
current = Next;
if (current.IsDigit())
{
_stringBuffer.Append(Specification.Dot).Append(current);
return(NumberFraction());
}
Back();
return(CssToken.Number(FlushBuffer()));
case '%':
return(CssUnitToken.Percentage(FlushBuffer()));
case 'e':
case 'E':
return(NumberExponential());
case Specification.Minus:
return(NumberDash());
default:
Back();
return(CssToken.Number(FlushBuffer()));
}
}
/// <summary>
/// 4.4.16. SciNotation state
/// </summary>
CssToken SciNotation()
{
while (true)
{
var current = Next;
if (current.IsDigit())
{
_stringBuffer.Append(current);
}
else
{
Back();
return(CssToken.Number(FlushBuffer()));
}
}
}
/// <summary>
/// 4.4.16. SciNotation state
/// </summary>
CssToken SciNotation(Char current)
{
while (true)
{
if (current.IsDigit())
{
_stringBuffer.Append(current);
}
else
{
_src.Back();
return(CssToken.Number(FlushBuffer()));
}
current = _src.Next;
}
}
/// <summary>
/// Substate of several Number states.
/// </summary>
CssToken NumberDash()
{
var current = Next;
if (current.IsNameStart())
{
var number = FlushBuffer();
_stringBuffer.Append(Specification.Minus).Append(current);
return(Dimension(number));
}
else if (IsValidEscape(current))
{
current = Next;
var number = FlushBuffer();
_stringBuffer.Append(Specification.Minus).Append(ConsumeEscape(current));
return(Dimension(number));
}
else
{
Back(2);
return(CssToken.Number(FlushBuffer()));
}
}